TECHNICAL DATASHEET #TDAX021500
HYDRAULIC FAN CONTROLLER Application Platform 3 Temperature Sensors 4 Digital Command Interfaces 1 PWM Input and 1 Analog Input 1 Proportional or ON/OFF Current Output RS232 Port
P/N: AX021500 Description: The hydraulic fan controller provides precise, repeatable control of 1 proportional or on/off solenoid valve to adjust the speed of a hydraulic fan. Fan speed is inversely proportional to the current through the valve. Valve current control is based on up to three 2-wire temperature sensor inputs. An additional analog input can be used for an override input or other function. A +5V reference powers the override potentiometer. One digital input can be used as manual control input to allow the fan speed in this mode to be set by the Override Potentiometer or analog input. A PWM input is available for interface to an engine ECM (electronic control module) or PWM temperature sensor. Three digital inputs allow for speed advance, speed retard and fan reverse functions (or other functions). The robust design accepts 9…32V power supply input and is packaged in an IP67 rated housing with 24-pin connectors. The controller is designed for remote mounting. RS-232 port interfaces to PC with Tera Term freeware for user configuration and diagnostics. Other hydraulic control applications beyond fan controls can be accommodated with this hardware and application-specific software. Applications include: Hydraulic Fan Drives; and Industrial and off-highway (mobile) applications for control of hydraulic valves.
Features: • • • • • • • • • • • • •
Independent output drives 1 solenoid valve (on/off or proportional) Up to 3 analog temperature sensor inputs with +5V reference power One PWM input interfaces to an ECM or PWM temperature sensor Three active low digital inputs (interface to switches, fan reverse and other fan control commands, etc.) One digital input can be used as manual control input to allow the fan speed in this mode to be set by the Override Potentiometer or analog input. Universal analog input (0-5V, 0-10V, 4-20 mA, 0-20 mA) +5V reference can power a potentiometer Interfaces to a 9…32VDC power supply with reverse polarity protection Thermal overload and overvoltage protection provided User configurability is provided within factory preset ranges based on the application Rugged IP67 rated packaging with plug-in connections Operational from -40 to 85°C (-40 to 185°F) RS232 interface to PC or laptop for user configuration and diagnostics
Ordering Part Numbers: Controller: AX021500 (For application-specific s/w please contact Axiomatic for a part number.) Accessories: AX070000 Mating Plug Kit with DB-9
Technical Specifications: The specifications represent a particular hardware platform. (Application-specific s/w will be provided on request).
Input Specifications Power Supply Input - Nominal
12 or 24VDC nominal; 9…32 VDC power supply range
Reverse Polarity Protection
Provided
Analog Inputs Delphi sensors are accepted (see Table 1). p/n 12146897 coolant/fluid temperature sensor p/n 12110446 sealed air temperature sensor p/n 121295956 exposed air temperature sensor The controller also accepts Honeywell NTC thermistors p/n 50006023-001 (see Table 2). The user may also select different sensors. Sensors with a linear response are preferred. Upon ordering, provide details of the selected sensors’ specifications for factory programming the controller. Temperature Sensor Inputs 3 temperature sensor inputs User specifies sensor, range of temperature control and setpoints Sensors’ Ground Common ground connection provided. Analog Input 1 0-5V, 0-10 VDC, 4-20 mA, 0-20 mA Option: 0.25 – 4.75 V potentiometer (5K to 10K) (software feature) Analog Ground Analog ground provided
PWM Input PWM Temperature Input
PWM pulse – normal/reverse polarity up to 3 kHz Adjustable from 0-100% Duty Cycle (5-95% default) For example, the controller could interface to a PWM signal from an engine ECM or an external PWM temperature sensor.
Digital Inputs The controller accepts switched inputs or other digital inputs. For example, in a hydraulic fan drive application, digital inputs can be specified to perform these functions: fan direction CW/CCW, climate control ON/OFF, reduce flow (speed retard); speed advance. Fan reverse has an additional programmed parameter of hold time. Digital Input 1 Active Low Digital Input 2 Active Low Digital Input 3 Active Low Digital Input 4 Manual Control (MC) MANUAL CONTROL Active Low The manual control input switches the controller into the manual control mode. The fan speed in this mode is set by the Override Potentiometer or analog input. If MC is active, the fan speed is determined ONLY by the Override Input. If MC is passive, the fan speed is determined by the temperature and PWM inputs. Digital Ground Common digital ground connection provided (shared as PWM input GND)
Table 1: Delphi Sensor Temperature vs. Output (Resistance) Table Temp [Deg C]
Resistance [ohms]
Res [+/- %]
Ref Acc [+/- Deg C]
Temp [Deg C]
Resistance [ohms]
Res [+/- %]
Ref Acc [+/- Deg C]
20
3511
2.64
0.60
75
395
2.07
0.60
25
2795
2.50
0.60
80
334
2.04
0.60
30
2240
2.45
0.60
85
283
2.00
0.60
35
1806
2.40
0.60
90
241.8
2.10
0.70
40
1465
2.36
0.60
95
207.1
2.21
0.70
45
1195
2.31
0.60
100
178.0
2.31
0.80
50
980
2.27
0.60
105
153.6
2.42
0.80
55
809
2.23
0.60
110
133.1
2.52
0.90
60
671
2.19
0.60
115
115.7
2.61
0.90
65
559
2.15
0.60
120
100.9
2.68
1.00
70
469
2.11
0.60
Note: The table only applies between 20˚C to 120˚C. Temperatures below this range are set to 20˚C, and temperatures above this range are set to 120˚C.
TDAX021500
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Table 2: Honeywell NTC Thermistor Temperature vs. Output (Resistance) Table Temp [Deg C]
Resistance [ohms]
Temp [Deg C]
Resistance [ohms]
Temp [Deg C]
Resistance [ohms]
Temp [Deg C]
Resistance [ohms]
20
1249.5
45
436.6
70
175.2
95
78.8
21
1194.5
46
420.0
71
169.3
96
76.5
22
1142.1
47
404.0
72
163.7
97
74.3
23
1092.3
48
388.6
73
158.3
98
72.1
24
1045.0
49
374.0
74
153.1
99
70.0
25
1000.0
50
360.0
75
148.1
100
68.0
26
957.2
51
346.6
76
143.3
101
66.0
27
916.4
52
333.8
77
138.6
102
64.2
28
877.6
53
321.5
78
134.1
103
62.3
29
840.7
54
309.7
79
129.8
104
60.6
30
805.5
55
298.4
80
125.7
105
58.9
31
772.0
56
287.6
81
121.7
106
57.2
32
740.0
57
277.3
82
117.9
107
55.6
33
709.6
58
267.3
83
114.2
108
54.1
34
680.6
59
257.8
84
110.6
109
52.6
35
652.8
60
248.7
85
107.2
110
51.2
36
626.5
61
239.9
86
103.8
111
49.8
37
601.3
62
231.5
87
100.6
112
48.4
38
577.2
63
223.4
88
97.6
113
47.1
39
554.3
64
215.7
89
94.6
114
45.8
40
532.3
65
208.2
90
91.7
115
44.6
41
511.4
66
201.1
91
89.0
116
43.4
42
491.4
67
194.2
92
86.3
117
42.3
43
472.3
68
187.6
93
83.7
118
41.1
44
545.0
69
181.3
94
81.2
119
40.1
120
39.0
Note: The table only applies between 20˚C to 120˚C. Temperatures below this range are set to 20˚C, and temperatures above this range are set to 120˚C.
Output Specifications Maximum Current Output (High frequency PWM output)
Reference Voltage Output Current Adjustments
Superimposed Dither
Ramp Rate
TDAX021500
High side driver 1 output (up to 2A) Solenoid A: 1 proportional or 1 on/off Overcurrent protection is provided Short circuit protection is provided. +5V, 50 mA I-max. (specified by user – configurable setpoint in software) I-set (specified by user – configurable setpoint in software) I-min. (specified by user – configurable setpoint in software) All current settings are adjustable from 0 to 2 Amps. Dither Amplitude: 10% I-max. (fixed) Dither Frequency: (specified by user – configurable setpoint in software) Adjustable from 700-350 Hz Ramps to I-set: (specified by user – configurable setpoint in software) Adjustable from 0-5 seconds.
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Configurable Parameters The following table illustrates typical fan control software available on request. Alternatively, application-specific software can be provided. Description
Default
Range
(Specified when order)
(Specified when order)
NTC NTC NTC TBA TBA TBA TBA TBA TBA 60
{NTC, PTC_RTD, Delphi, Not _Active}
Enumerator
Temp. Sensor 1 Low Temp. Sensor 1 High Temp. Sensor 2 Low Temp. Sensor 2 High Temp. Sensor 3 Low Temp. Sensor 3 High Analog Input Filter Frequency
Al1_type Al2_type Al3_type AI1_low AI1_high AI2_low AI2_high AI3_low AI3_high Al_ff
20-120 20-120 20-120 20-120 20-120 20-120 {50, 60}
ºC ºC ºC ºC ºC ºC
PWM Input Low PWM Input High PWM Input Type
PWM_low PWM_hi PWM_type
5 95 Normal
Input Priority
Al_pri
No_Priority
% Speed Advance % Speed Retard Invert Output Current (Fan Reverse) I-set Ramp Time Minimum Current Setpoint Current Maximum Output Current Fan Reverse Hold Time
RPM_adv RPM_ret I_inv I_ramp I_min I_set I1_max t_rev
Temp. Sensor Type
Variable Name
Unit
Enumerator, Values are in Hz
TBA TBA TBA
0-100 0-100 {Normal, Reversed, Not_Active} {TS1, TS2, TS3, PWMI, No_Priority} 0-100 0-100 T/F
% D.C. % D.C. Enumerator
% % -
TBA TBA TBA TBA TBA
0-5 0-2000 0-2000 0-2000 0-20
sec mA mA mA sec
Enumerator
General Specifications Microprocessor Control Logic
Interface
Electrical Connections
Packaging and Dimensions
Operating Conditions Vibration Protection Weight Mounting
TDAX021500
MC56F8322 Application – specific software provided The controller can be factory programmed with a range of temperatures (minimum and maximum temperature setpoints) or a single temperature setpoint. The priority of the digital inputs is factory programmed. RS-232 on-board connection is available for setpoint configuration, software upgrade and diagnostics. RS232 serial communication interfaces to a serial port (i.e. COM1) on a PC (115200 Baud Rate, N81, Xon/Xoff Flow Control) TM Tera Term or Microsoft HyperTerminal or an equivalent data terminal 24 pin Deutsch DTM series 24 pin receptacle (DTM13-12PA-12PB-R008) Mating plug: Deutsch DTM06-12SA and DTM06-12SB with 2 wedgelocks (WM12S) and 24 contacts (0462-201-20141). 20 AWG wire is recommended for use with contacts 0462-201-20141. Mating plugs are provided with prototypes only. Use dielectric grease on the pins when installing the controller. High Temperature Nylon housing Deutsch IPD PCB Enclosure (EEC-325X4B) 4.62 x 5.24 x 1.43 inches 117.42 x 133.09 x 36.36 mm (W x L x H excluding mating plug) OEM specific packaging and connection styles are available. -40 to 85°C (-40 to 185°F) Vibration compliance is suitable for mobile equipment applications. IP67; Unit is conformally coated within the housing. Plugs carry an IP69 rating. Contact Axiomatic. Contact Axiomatic.
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Connections (Typical):
Refer to installation instructions for a specific part number for actual pin out.
Grey Connector Pin # 1 2 3 4 5 6 7 8 9 10 11 12
Function +5V Reference (Protected) Analog Input (Potentiometer) Analog GND or RS-232 GND (DB-9 Female, pin 5) Solenoid ANot Used Battery Battery + Not Used Solenoid A+ RS-232 Receive (DB-9 Female, pin 3) RS-232 Transmit (DB-9 Female, pin 2) Not Used
TDAX021500
Black Connector Pin # 1 2 3 4 5 6 7 8 9 10 11 12
Function Temperature Sensor 1 Temperature Sensor 2 Temperature Sensor 3 Temperature Sensors’ GND Digital GND or RS-232 GND (DB-9 Female, pin 5) PWM Input Digital Input 1 Digital Input 2 Digital Input 3 Digital Input 4 (Manual Mode) Not Used Not Used
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RS-232 communications: For further details refer to the user manual for the specific part number. Using a PC and Tera term freeware, the user can select between displaying system parameters, changing system parameters, setting the default values, loading new software and showing the internal state of the controller (diagnostics). NB. Tera term is freeware and is downloadable from http://hp.vector.co.jp/authors/VA002416/teraterm.html. 1. Setting Up PC Communications to the Controller • •
• •
Connect an RS-232 to DB-9 cable adaptor to the controller and a PC. Use a stable power supply. With the power supply OFF, connect the controller Power- to the power supply Ground, and the Power+ to the power supply +. Open Tera Term Pro, and set it up as shown below. (Free downloadable from http://hp.vector.co.jp/authors/VA002416/teraterm.html) Select Serial with the appropriate COM port.
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•
Go to Setup/Serial Port and change the settings exactly as shown below.
• •
Go to Setup/Terminal and verify that New-line Transmit and Receive are CR. Adjust the window size as desired by checking ‘Term size = win size’.
2. Configuring the Controller - Main Menu • •
To access the main menu for existing software, turn ON power to the controller. Follow the prompts on the screen to view or to change the configurable parameters. Specifications are subject to update without notice. Form: TDAX021500-12/04/07
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